<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script>
        class Cache {
            static obj = new Map()
            static {
                this.obj.set("name", "twj")
                this.obj.set("age", 100)
            }
            static {
                console.log(this.obj)
            }
        }

    </script>
</body>

</html>